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-rw-r--r--lib/urlapi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/urlapi.c b/lib/urlapi.c
index 506e244dc..37937fbca 100644
--- a/lib/urlapi.c
+++ b/lib/urlapi.c
@@ -606,7 +606,7 @@ static CURLUcode hostname_check(struct Curl_URL *u, char *hostname)
char dest[16]; /* fits a binary IPv6 address */
#endif
const char *l = "0123456789abcdefABCDEF:.";
- if(hlen < 5) /* '[::1]' is the shortest possible valid string */
+ if(hlen < 4) /* '[::]' is the shortest possible valid string */
return CURLUE_MALFORMED_INPUT;
hostname++;
hlen -= 2;